#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
#include<set>

#include <unordered_set>
using namespace std;
void test_ste01()
{
	unordered_set<int> s;
	int arr[] = { 6,7,3,4,9,6,5,3 };
	for (auto x : arr)
	{
		s.insert(x);
	}
	for (auto x : s)
	{
		cout << x << " " ;
	}
	cout << endl;
}
int main()
{
	test_ste01();
	return 0;
}